为提高电絮凝法对Ni-EDTA的去除效率,并深入分析其反应机理,研究了不同材料的电极组合、电流密度和初始pH对Ni-EDTA去除效果的影响.结果表明:铁阳极+铝阴极产生的有效絮凝剂最多,对TOC和Ni的去除率最高,分别为98.75％和99.99％;随着电流密度的增大,TOC和Ni的去除率逐渐升高,4.38 mA·cm-2时去除率分别达到98.95％和99.21％;且电流效率开始下降.初始pH为3时,TOC和Ni的去除率分别为98.27％和99.89％,随着pH的升高去除率逐渐下降.对溶液和絮体进行紫外光谱(UV)、红外光谱(FTIR)以及扫描电镜(SEM-EDS)分析结果表明:Ni-EDTA主要通过Fe(OH)3的絮凝吸附沉淀,电解产生的HClO和阳极电位的氧化反应以及Fe(Ⅲ)的转络合反应等一系列共同作用去除.%In order to improve the removal efficiency of Ni-EDTA and analyze the reaction mechanism,electro-coagulation treatment of Ni-EDTA complexes wastewater was conducted in reactor and the effect of parameters such as electrode arrangement,current density and initial pH on the Ni-EDTA removal were investigated systematically.The results showed that the best performance,with 98.75％ removal for TOC and 99.9％ removal for Ni,were achieved by using the combination of Fe anode and Al cathode which produced the most effective flocculant.The performace of the electro-coagulation was enhanced by increasing current density with removal efficiency up to 98.95％ for TOC and 99.21％ for Ni achived,respectively,under current density of 4.38 mA·cm-2.The optimal performance of the electro-coagulation were obtained at initial pH 3 under which 98.27％ removal for TOC and 99.89％ removal for Ni were achieved,respectively,after that,the removal rate gradually decreased with the increases of pH.The solution and flocculation were analyzed by ultraviolet spectrum (UV),infrared spectrum (FTIR) and scanning electron microscope (SEM-EDS) which indicated that precipitation by flocculation of Fe (OH) 3,oxidation by HClO with anode and trans-complexation of Fe(Ⅲ) were responsible for the removal of Ni-EDTA by the electro-coagulation process.
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机译：作为干扰衰落的直接视线无线电部分Fm-FDm无线电链路中的互调噪声。 Intermodulationsgeraeusche im Fm-FDm-Richtfunk auf Funkfeldern mIT Direkter sicht als Folge von Interferenzschwund
